VDR data-recording duration check - minimum 12 h full data + 48 h tamper-evident fixed capsule per MSC.333(90).
Formula
$$ \text{Retention} = \min(12h \text{ full}, 48h \text{ capsule}) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $VDR$ | Voyage Data Recorder | - | IMO MSC.333(90) |
Sources
- IMO MSC.333(90).